Strings-Remove Duplicates

Take as input S, a string. Write a function that removes all consecutive duplicates. Print the value returned.
Input Format

String
Constraints

A string of length between 1 to 1000
Output Format

String
Sample Input

aabccba

Sample Output

abcba

Explanation

For the given example, "aabccba", Consecutive Occurrence of a is 2, b is 1, and c is 2.

After removing all of the consecutive occurences, the Final ans will be : - "abcba".